Air compressor



FIG. 1 is a left/front perspective view of the air compressor.

FIG. 2 is a front elevational view thereof.

FIG. 3 is a rear elevational view thereof.

FIG. 4 is a right side elevational view thereof.

FIG. 5 is a left side elevational view thereof.

FIG. 6 is a top view thereof; and,

FIG. 7 is a bottom view thereof.

The dashed lines and the areas within the dashed lines form no part of the claimed ornamental design. 

The ornamental design for an air compressor, as shown and described. 